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Fiesta28 [93]
2 years ago
12

The researcher also determined that the standard deviation of all horses coming to the veterinary clinic is 8 years. Based on th

e Central Limit Theorem we know the distribution of means from every sample of size 60 will be , with a mean of and a standard deviation of . The probability that a sample mean is 12 or larger for a sample from the horse population is_________
Mathematics
1 answer:
elena-14-01-66 [18.8K]2 years ago
3 0

Answer: 0.9013

Step-by-step explanation:

Given mean, u = 10, standard deviation =8

P(X) =P(Z= X - u /S)

We are to find P(X> or =12)

P(X> or = 12) = P(Z> 12-10/8)

P(Z>=2/8) = P(Z >=0.25)

P(Z) = 1 - P(Z<= 0.25)

We read off Z= 0.25 from the normal distribution table

P(Z) = 1 - 0.0987 = 0.9013

Therefore P(X> or=12) = 0.9013

Note the question was given as an incomplete question the correct and complete question had to be searched online via Google. So the data used are those gotten from the online the Googled question.

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galina1969 [7]
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4 0
2 years ago
Cheryl has $56 and wants to buy as many notebooks as she can to donate to her school. If each notebook costs $1.60, which inequa
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2 years ago
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If a plane can climb at 2,400 feet per minute, how many minutes are needed to climb to 60,000 feet?
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Answer:

b

Step-by-step explanation:

25 minutes

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Step-by-step explanation:

the answer is 13.5


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